Photon polarization entanglement induced by Biexciton: experimental evidence for violation of Bell's inequality.

Abstract

We have investigated the polarization entanglement between photon pairs generated from a biexciton in a CuCl single crystal via resonant hyperparametric scattering. The pulses of a high repetition pump are seen to provide improved statistical accuracy and the ability to test Bell's inequality. Our results clearly violate the inequality and thus manifest the quantum entanglement and nonlocality of the photon pairs. We also analyzed the quantum state of our photon pairs using quantum state tomography.

Cite this paper

@article{Oohata2007PhotonPE, title={Photon polarization entanglement induced by Biexciton: experimental evidence for violation of Bell's inequality.}, author={Goro Oohata and Ryosuke Shimizu and Keiichi Edamatsu}, journal={Physical review letters}, year={2007}, volume={98 14}, pages={140503} }